Improvement in manufacture of spectacle-bows



wANTYa LUNDGREN. Making Spectacle Bows.

No. 85.495. Patented Dec. 29, 1868.l

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Letters Patent No. 85,495, dated December 29, 1868.

IMPROVEMENT IN MANUFACTURE OF SPECTACLE-IBOWS.

Op-F* c The Schedule' referred to these Letters Patent and Imaking part of the same.

To all whom it may concern:

Be it known that we, HENRY WANT and J oHN LUND- GREN, of New Haven, in the county oiNew Haven, and State of Connecticut, have invented a new Improvement in the Manufacture of Spectacle-Bows; and we do hereby declare the. following, when taken in connec- .tion with the accompanying drawings, and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this slviecifcation, and represent, iii- Figure 1, a i'ontview of the bows complete; Figure 2, the wire as first prepared;

Figure 3, the second operation;

Figure 4, the third operation; and,

Figures 5, 6, and 7, the usual construction.

This invention relates to an improvement in the manufacture of spectacle-frames or bows.

Heretofore each bow has been formed from a separate piece of wire', as seen in figs. 5 and 7, with an ear, a; attached to each end, which forms the hinge, and also as a means4 for securing thc glasses within their respective bows. Then these two bows,l after being properly formed, are attached together by a third part, Seen in iig. 6, which forms the bridge or nose-piece. Thesetlnee parts are brazed together, to complete the frame. It being desirable to make the frame as light as possible, the connection between the two bows and nose-piece is nccessaril y very weak, and liable to break at those points. These several parts and their attachment, practically seven pieces, as each ear is separately attached, make the construction of the bows very con-.-

plicated.

The object of ourinvention is to simplify the construction-of the bows, and to construct a stronger and better article; and, to this end,

The invention'consists in constructing thc two bows and bridge from a single piece of wire, bent so as to form both eyes and the bridge.

To enable 'others to fully understand our invention, we will fully describe the saine as illustrated in the l accompanying drawings.

From wire of the proper size we out the length required, as seen in fig. 2,1504 form the bows and nosepiece or bridge. Then from each end, toward the ceutre, vto a point, d, we form the groove for the inside oi the bow, to receive the glass. The space between the two points (Z is sufficient to form lthe nose-piece. This done, we bend, upon a proper former, or otherwisc, into the shape seen in iig. 3, theextreme ends turning over to the point cl. -Then we place upon each of the meeting points l a loop7 of steel or suitable metal, j, and brazol solder-,or weld the parts together. Then the ears A, which have been formed and attached together by the screw which usually joins the' ears of the spectacles, are attached to each bow, as seen in iig. l. Then the bows are finished at the points of connection, by filing away the surplus metal, and the bows are cut at the joint A, and, when polished, are yh'nished and complete, and the point of connection between the two bows and nose-piece is not only equally as strong as any part in the bows, but is strengthened by thc additional metal left from the loops f, and, as will be readily seen, the principal portion of labor and difficulty which is necessary and experienced in the usual nicthod of construction .is.av0ided.

Having fully described our invention,

Vhat we claim as new and useful, and desire to seeure by Letters Patent, is

Spectacle-bows, constructed in the manner, and of a single continuous piece of wire, substantially as' herein set forth.

HENRY WANT. JOHN LUNDGREN.

Witnesses:

J oHN H. SHUMWAY A. J. Tinnitus, 

